4
Question
Which one of the following is not an element?
Which one of the following is not an element?
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Solution
The correct option is D Silica
Silicon dioxide is known as silica with molecular formula =SiO2 which is a compound, not an element.
Diamond and graphite are purely made up of carbon i.e C, an element.
Ozone is trioxygen molecule i.e O3, an element.
Hence, the answer is option C.
Silicon dioxide is known as silica with molecular formula =SiO2 which is a compound, not an element.
Diamond and graphite are purely made up of carbon i.e C, an element.
Ozone is trioxygen molecule i.e O3, an element.
Hence, the answer is option C.
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